Browser Physics Sandbox

A minimal physics sandbox where visitors interact with falling, bouncing, and colliding 3D objects. Pure cause-and-effect — the simplest version of physics-by-doing.

● Live demo · 2024 · Needle Engine / Three.js / Rapier
Browser-based 3D physics sandbox for elementary STEM education and intro mechanics curriculum
Open live demo

A minimal physics sandbox where visitors interact with falling, bouncing, and colliding 3D objects. Pure cause-and-effect — the simplest version of physics-by-doing.

Where this minimal format is exactly right:

  • Elementary and middle-school physics introductions where simpler is better
  • Educational toys for at-home learning, parent-curated activity time
  • The first interactive in a longer module before more complex simulations follow

Who benefits: primary and secondary STEM curriculum publishers, edutainment platforms, kids' science apps, homeschool resource providers, family-oriented science museums.

The first physics lesson a kid remembers is the one where they made something move. Sandboxes deliver that on day one.

Want something like this for your team?

I join product and engineering teams for 4–12 weeks to ship interactive 3D experiences end-to-end. Independent contractor — no agency overhead.